Tool-holder.



V. NIEMELA.

TOOL HOLDER.

APPLICATION FILED NOV. 6. 1915.

1 ,235,364, Patented July 31, 1917.

2 SHEETS-SHEET 1.

V. NIEMELA.

TOOL HOLDER.

APPLICATION FILED NOV. 6, 1915 1 ,235,36 I Pgxfented July 31, 1917.

2 SHEETSSHEET 2.

M w I 15- WM 7 'WI VAINO NIEMELA, OE CLEVEL, OHIU;

T FC.

. roo -nonnnn' Application filed November 8, 1915. Serial No. 59,984.

To all whom it may concern:

' Be itknown that I, .VAnvo NmMnLA, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new "and useful Improvements in Tool-Holders,

of which the following is a specification.

My present invention relates to improvements in lathe tool holders, and more particularly to a tool holder adapted to receive bits of varying cross sections.

The object of my invention 1s to provide a tool holderthat may be adjustedvto any angle and which will resiliently retain the tool in proper engagement with the work.

A further object of my invention 1s to. provide a tool holder that will be readily to the carriage.

Having these and other objects of general utility and design in view, I have illustrated an operative'construction-of my invention in v the accompanying drawings, in which F igurel is an elevational view of my tool holder. v

Fig. 2 isa top plan thereof.

Fig. 3 is a front elevation of the'device as shown in Fi 1. v

Fig. 4 is a f ragmental detail of the forward end of my resilient arm connecting the bit post to the'tool holder. 1

No. 5 is sectional detail taken on line 55 of Fig. '1. i 1

Fig. 6 is a perspective view of the special bolt and bearing as shown in Fig. 5. Fig. 7 is a detail of a modfied form of the bit post shown accommodating a larger bit or tool,vother than shown in Fig. 1.

Fig. 8 is a section taken on line 88 of Fig. 9 is a perspective view of thespecial form of bolt employed in the assembling of my modified bit post, as shown in Figs. 7 and 8. 1

Similar reference characters refer to similar parts throughout the several views.

My improved lathe tool holder comprises the usual shank 10, adapted to be inserted into the tool post of the lathe (not shown), Secured to the forward end of the shank 10,

I Specification of Letters Patent.

my present in- Patented July 31, 1917.

by means of a split collar 11, is a substantlally inverted U-shaped spring member 12, prov ded at its opposite end with a recessed bear ng post 13. Rotatably'secured to the bearmg13, I provide a suitable bit post, comprising a split collar 14:, (Fig. 1) frictionally secured to the bearing 13, by means of a lateral boltl5, adapted to pass transversely therethrough'; said bolt is provid-' ed with an enlarged head 15 and has a transverse slot 15 therethrough. Passing through the slot 15 and lying adjacent a groove 14, in the vertical side of the bit post, is a bit 16. 1

In Figs. 7 and 8, l have shown a modified form of bit post, wherein in place of the centrally disposed bolt 15, I provide two screws 17-17 one on either side of the. re-

cess or groove wherein fits thebit or tool: one-half of the heads of said bolt are mortised out, as in Fig. 9, for the purpose of accommodating the bit shank as shown As described, my tool holder is a suitable holder for tools of difierent styles, such as form tools, backing ofi tools, boring tools,

threading tools, and tools having different slzed shanks, and made of difierent sizes and shapes of tool stock. The gooseneck l2 as provided and described, facilitates theuse will'be 0 vious to others skilled in the art 1 to which it appertains, that numerous modifications and refinements may be made therein, and still come within the scope of my appended claim. What is claimed is A tool holder including a shank member; an inverted U-shaped resilient member, a split-collar connecting one end of said\..U-

shaped member with one end of said shank,-

a bearing post having an annular concave bottomed recess, said bearing post being carried at the opposite end of said U-shaped member, a bit post comprising a split collar frictionally secured to said bearing post, a

lateral 001i; adapted to pass transversely my own I have hereto aflixed my signatilre in the presence of two subscribing Witnesses.

through said collar, said bolt itself having (1 bit post having a gr osed said (i groove in the bit a s10't sai GOVQ opp t0 sald slat, sald slot receiving the b111, VALNO NIEMELA.

W'itnesses:

EDWARD C. STANTON, Wm. G. WELLS.

post.

+9 n. e c a In testimony t at IE claim the foregoing as 

